Aggregation is an important factor among physical soil parameters and affects soil quality. In this study, some soil physical (field capacity, wilting point and sand, silt and clay contents), chemical (pH, electrical conductivity, CaCO3, organic matter and exchangeable Na, Ca, Mg and K) and biological properties (CO2 from respiration and urease, dehydrogenase, β-glucosidase, alkaline phosphatase and acid phosphatase activities) were examined. Some of these properties were eliminated by principal component and clustering analyses to create a minimum dataset. Correlations were evaluated between selected properties and the percentage aggregation of micro ( 0.05). In general, the highest correlation for micro aggregation was with enzyme activity.

中文翻译：

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使用主成分和聚类分析选择土壤特性以评估土壤聚集

团聚是土壤物理参数中的一个重要因素，影响土壤质量。在这项研究中，一些土壤物理（田间容量、枯萎点和沙子、粉土和粘土含量）、化学（pH 值、电导率、CaCO3、有机质和可交换的 Na、Ca、Mg 和 K）和生物特性（来自呼吸作用的 CO2和尿素酶、脱氢酶、β-葡萄糖苷酶、碱性磷酸酶和酸性磷酸酶活性）进行了检查。其中一些属性被主成分和聚类分析消除以创建最小数据集。评估所选属性与微观聚集百分比 (0.05) 之间的相关性。一般来说，微聚集的最高相关性与酶活性有关。